The bob of a pendulum carries an electric charge of \[39.2\,\,\times \,\,{{10}^{-}}^{10}\] coulomb in a horizontal electric field of \[20\text{ }\times \text{ }{{10}^{3}}\,V/m\] and it is at rest. The angle made by the pendulum with the vertical will be, if the mass of pendulum is \[8\,\,\times \,\,{{10}^{-6}}\text{ }kg\] and \[g\,\,=\,\,9.8\text{ }m/{{s}^{2}}\]-